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android / platform / external / dng_sdk / 073cffed32c26aba56e14606022eddcb76321909 / . / source / dng_info.cpp
blob: 5b742aa463cd7f47c29e1914de04bbcbf58804d4 [file] [log] [blame]
/*****************************************************************************/
// Copyright 2006-2007 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in
// accordance with the terms of the Adobe license agreement accompanying it.
/*****************************************************************************/
/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_info.cpp#1 $ */
/* $DateTime: 2012/05/30 13:28:51 $ */
/* $Change: 832332 $ */
/* $Author: tknoll $ */
/*****************************************************************************/
#include "dng_info.h"
#include "dng_camera_profile.h"
#include "dng_exceptions.h"
#include "dng_globals.h"
#include "dng_host.h"
#include "dng_tag_codes.h"
#include "dng_parse_utils.h"
#include "dng_safe_arithmetic.h"
#include "dng_tag_types.h"
#include "dng_tag_values.h"
#include "dng_utils.h"
/*****************************************************************************/
dng_info::dng_info ()
: fTIFFBlockOffset (0)
, fTIFFBlockOriginalOffset (kDNGStreamInvalidOffset)
, fBigEndian (false)
, fMagic (0)
, fExif ()
, fShared ()
, fMainIndex (-1)
, fMaskIndex (-1)
, fIFDCount (0)
, fChainedIFDCount (0)
, fMakerNoteNextIFD (0)
{
}
/*****************************************************************************/
dng_info::~dng_info ()
{
}
/*****************************************************************************/
void dng_info::ValidateMagic ()
{
switch (fMagic)
{
case magicTIFF:
case magicExtendedProfile:
case magicRawCache:
case magicPanasonic:
case magicOlympusA:
case magicOlympusB:
{
return;
}
default:
{
#if qDNGValidate
ReportError ("Invalid TIFF magic number");
#endif
ThrowBadFormat ();
}
}
}
/*****************************************************************************/
void dng_info::ParseTag (dng_host &host,
dng_stream &stream,
dng_exif *exif,
dng_shared *shared,
dng_ifd *ifd,
uint32 parentCode,
uint32 tagCode,
uint32 tagType,
uint32 tagCount,
uint64 tagOffset,
int64 offsetDelta)
{
bool isSubIFD = parentCode >= tcFirstSubIFD &&
parentCode <= tcLastSubIFD;
bool isMainIFD = (parentCode == 0 || isSubIFD) &&
ifd &&
ifd->fUsesNewSubFileType &&
ifd->fNewSubFileType == sfMainImage;
// Panasonic RAW format stores private tags using tag codes < 254 in
// IFD 0. Redirect the parsing of these tags into a logical
// "PanasonicRAW" IFD.
// Panasonic is starting to use some higher numbers also (280..283).
if (fMagic == 85 && parentCode == 0 && (tagCode < tcNewSubFileType ||
(tagCode >= 280 && tagCode <= 283)))
{
parentCode = tcPanasonicRAW;
ifd = NULL;
}
stream.SetReadPosition (tagOffset);
if (ifd && ifd->ParseTag (stream,
parentCode,
tagCode,
tagType,
tagCount,
tagOffset))
{
return;
}
stream.SetReadPosition (tagOffset);
if (exif && shared && exif->ParseTag (stream,
*shared,
parentCode,
isMainIFD,
tagCode,
tagType,
tagCount,
tagOffset))
{
return;
}
stream.SetReadPosition (tagOffset);
if (shared && exif && shared->ParseTag (stream,
*exif,
parentCode,
isMainIFD,
tagCode,
tagType,
tagCount,
tagOffset,
offsetDelta))
{
return;
}
if (parentCode == tcLeicaMakerNote &&
tagType == ttUndefined &&
tagCount >= 14)
{
if (ParseMakerNoteIFD (host,
stream,
tagCount,
tagOffset,
offsetDelta,
tagOffset,
stream.Length (),
tcLeicaMakerNote))
{
return;
}
}
if (parentCode == tcOlympusMakerNote &&
tagType == ttUndefined &&
tagCount >= 14)
{
uint32 olympusMakerParent = 0;
switch (tagCode)
{
case 8208:
olympusMakerParent = tcOlympusMakerNote8208;
break;
case 8224:
olympusMakerParent = tcOlympusMakerNote8224;
break;
case 8240:
olympusMakerParent = tcOlympusMakerNote8240;
break;
case 8256:
olympusMakerParent = tcOlympusMakerNote8256;
break;
case 8272:
olympusMakerParent = tcOlympusMakerNote8272;
break;
case 12288:
olympusMakerParent = tcOlympusMakerNote12288;
break;
default:
break;
}
if (olympusMakerParent)
{
// Olympus made a mistake in some camera models in computing
// the size of these sub-tags, so we fudge the count.
if (ParseMakerNoteIFD (host,
stream,
stream.Length () - tagOffset,
tagOffset,
offsetDelta,
tagOffset,
stream.Length (),
olympusMakerParent))
{
return;
}
}
}
if (parentCode == tcRicohMakerNote &&
tagCode == 0x2001 &&
tagType == ttUndefined &&
tagCount > 22)
{
char header [20];
stream.SetReadPosition (tagOffset);
stream.Get (header, sizeof (header));
if (memcmp (header, "[Ricoh Camera Info]", 19) == 0)
{
ParseMakerNoteIFD (host,
stream,
tagCount - 20,
tagOffset + 20,
offsetDelta,
tagOffset + 20,
tagOffset + tagCount,
tcRicohMakerNoteCameraInfo);
return;
}
}
#if qDNGValidate
{
stream.SetReadPosition (tagOffset);
if (gVerbose)
{
printf ("*");
DumpTagValues (stream,
LookupTagType (tagType),
parentCode,
tagCode,
tagType,
tagCount);
}
// If type is ASCII, then parse anyway so we report any ASCII
// NULL termination or character set errors.
else if (tagType == ttAscii)
{
dng_string s;
ParseStringTag (stream,
parentCode,
tagCode,
tagCount,
s,
false);
}
}
#endif
}
/*****************************************************************************/
bool dng_info::ValidateIFD (dng_stream &stream,
uint64 ifdOffset,
int64 offsetDelta)
{
// Make sure we have a count.
if (ifdOffset + 2 > stream.Length ())
{
return false;
}
// Get entry count.
stream.SetReadPosition (ifdOffset);
uint32 ifdEntries = stream.Get_uint16 ();
if (ifdEntries < 1)
{
return false;
}
// Make sure we have room for all entries and next IFD link.
if (ifdOffset + 2 + ifdEntries * 12 + 4 > stream.Length ())
{
return false;
}
// Check each entry.
for (uint32 tag_index = 0; tag_index < ifdEntries; tag_index++)
{
stream.SetReadPosition (ifdOffset + 2 + tag_index * 12);
stream.Skip (2); // Ignore tag code.
uint32 tagType = stream.Get_uint16 ();
uint32 tagCount = stream.Get_uint32 ();
uint32 tag_type_size = TagTypeSize (tagType);
if (tag_type_size == 0)
{
return false;
}
uint32 tag_data_size = SafeUint32Mult(tagCount, tag_type_size);
if (tag_data_size > 4)
{
uint64 tagOffset = stream.Get_uint32 ();
tagOffset += offsetDelta;
if (SafeUint64Add(tagOffset, tag_data_size) > stream.Length())
{
return false;
}
}
}
return true;
}
/*****************************************************************************/
void dng_info::ParseIFD (dng_host &host,
dng_stream &stream,
dng_exif *exif,
dng_shared *shared,
dng_ifd *ifd,
uint64 ifdOffset,
int64 offsetDelta,
uint32 parentCode)
{
#if qDNGValidate
bool isMakerNote = (parentCode >= tcFirstMakerNoteIFD &&
parentCode <= tcLastMakerNoteIFD);
#endif
stream.SetReadPosition (ifdOffset);
if (ifd)
{
ifd->fThisIFD = ifdOffset;
}
uint32 ifdEntries = stream.Get_uint16 ();
#if qDNGValidate
if (gVerbose)
{
printf ("%s: Offset = %u, Entries = %u\n\n",
LookupParentCode (parentCode),
(unsigned) ifdOffset,
(unsigned) ifdEntries);
}
if ((ifdOffset & 1) && !isMakerNote)
{
char message [256];
sprintf (message,
"%s has odd offset (%u)",
LookupParentCode (parentCode),
(unsigned) ifdOffset);
ReportWarning (message);
}
#endif
uint32 prev_tag_code = 0;
for (uint32 tag_index = 0; tag_index < ifdEntries; tag_index++)
{
stream.SetReadPosition (ifdOffset + 2 + tag_index * 12);
uint32 tagCode = stream.Get_uint16 ();
uint32 tagType = stream.Get_uint16 ();
// Minolta 7D files have a bug in the EXIF block where the count
// is wrong, and we run off into next IFD link. So if abort parsing
// if we get a zero code/type combinations.
if (tagCode == 0 && tagType == 0)
{
#if qDNGValidate
char message [256];
sprintf (message,
"%s had zero/zero tag code/type entry",
LookupParentCode (parentCode));
ReportWarning (message);
#endif
return;
}
uint32 tagCount = stream.Get_uint32 ();
#if qDNGValidate
{
if (tag_index > 0 && tagCode <= prev_tag_code && !isMakerNote)
{
char message [256];
sprintf (message,
"%s tags are not sorted in ascending numerical order",
LookupParentCode (parentCode));
ReportWarning (message);
}
}
#endif
prev_tag_code = tagCode;
uint32 tag_type_size = TagTypeSize (tagType);
if (tag_type_size == 0)
{
#if qDNGValidate
{
char message [256];
sprintf (message,
"%s %s has unknown type (%u)",
LookupParentCode (parentCode),
LookupTagCode (parentCode, tagCode),
(unsigned) tagType);
ReportWarning (message);
}
#endif
continue;
}
uint64 tagOffset = ifdOffset + 2 + tag_index * 12 + 8;
if (SafeUint32Mult(tagCount, tag_type_size) > 4)
{
tagOffset = stream.Get_uint32 ();
#if qDNGValidate
{
if (!(ifdOffset & 1) &&
(tagOffset & 1) &&
!isMakerNote &&
parentCode != tcKodakDCRPrivateIFD &&
parentCode != tcKodakKDCPrivateIFD)
{
char message [256];
sprintf (message,
"%s %s has odd data offset (%u)",
LookupParentCode (parentCode),
LookupTagCode (parentCode, tagCode),
(unsigned) tagOffset);
ReportWarning (message);
}
}
#endif
tagOffset += offsetDelta;
stream.SetReadPosition (tagOffset);
}
ParseTag (host,
stream,
exif,
shared,
ifd,
parentCode,
tagCode,
tagType,
tagCount,
tagOffset,
offsetDelta);
}
stream.SetReadPosition (ifdOffset + 2 + ifdEntries * 12);
uint32 nextIFD = stream.Get_uint32 ();
#if qDNGValidate
if (gVerbose)
{
printf ("NextIFD = %u\n", (unsigned) nextIFD);
}
#endif
if (ifd)
{
ifd->fNextIFD = nextIFD;
}
#if qDNGValidate
if (nextIFD)
{
if (parentCode != 0 &&
(parentCode < tcFirstChainedIFD ||
parentCode > tcLastChainedIFD ))
{
char message [256];
sprintf (message,
"%s has an unexpected non-zero NextIFD (%u)",
LookupParentCode (parentCode),
(unsigned) nextIFD);
ReportWarning (message);
}
}
if (gVerbose)
{
printf ("\n");
}
#endif
}
/*****************************************************************************/
bool dng_info::ParseMakerNoteIFD (dng_host &host,
dng_stream &stream,
uint64 ifdSize,
uint64 ifdOffset,
int64 offsetDelta,
uint64 minOffset,
uint64 maxOffset,
uint32 parentCode)
{
uint32 tagIndex;
uint32 tagCode;
uint32 tagType;
uint32 tagCount;
// Assume there is no next IFD pointer.
fMakerNoteNextIFD = 0;
// If size is too small to hold a single entry IFD, abort.
if (ifdSize < 14)
{
return false;
}
// Get entry count.
stream.SetReadPosition (ifdOffset);
uint32 ifdEntries = stream.Get_uint16 ();
// Make the entry count if reasonable for the MakerNote size.
if (ifdEntries < 1 || 2 + ifdEntries * 12 > ifdSize)
{
return false;
}
// Scan IFD to verify all the tag types are all valid.
for (tagIndex = 0; tagIndex < ifdEntries; tagIndex++)
{
stream.SetReadPosition (ifdOffset + 2 + tagIndex * 12 + 2);
tagType = stream.Get_uint16 ();
// Kludge: Some Canon MakerNotes contain tagType = 0 tags, so we
// need to ignore them. This was a "firmware 1.0.4" Canon 40D raw file.
if (parentCode == tcCanonMakerNote && tagType == 0)
{
continue;
}
if (TagTypeSize (tagType) == 0)
{
return false;
}
}
// OK, the IFD looks reasonable enough to parse.
#if qDNGValidate
if (gVerbose)
{
printf ("%s: Offset = %u, Entries = %u\n\n",
LookupParentCode (parentCode),
(unsigned) ifdOffset,
(unsigned) ifdEntries);
}
#endif
for (tagIndex = 0; tagIndex < ifdEntries; tagIndex++)
{
stream.SetReadPosition (ifdOffset + 2 + tagIndex * 12);
tagCode = stream.Get_uint16 ();
tagType = stream.Get_uint16 ();
tagCount = stream.Get_uint32 ();
if (tagType == 0)
{
continue;
}
uint32 tagSize = SafeUint32Mult(tagCount, TagTypeSize (tagType));
uint64 tagOffset = ifdOffset + 2 + tagIndex * 12 + 8;
if (tagSize > 4)
{
tagOffset = stream.Get_uint32 () + offsetDelta;
if (tagOffset < minOffset ||
SafeUint64Add(tagOffset, tagSize) > maxOffset)
{
// Tag data is outside the valid offset range,
// so ignore this tag.
continue;
}
stream.SetReadPosition (tagOffset);
}
// Olympus switched to using IFDs in version 3 makernotes.
if (parentCode == tcOlympusMakerNote &&
tagType == ttIFD &&
tagCount == 1)
{
uint32 olympusMakerParent = 0;
switch (tagCode)
{
case 8208:
olympusMakerParent = tcOlympusMakerNote8208;
break;
case 8224:
olympusMakerParent = tcOlympusMakerNote8224;
break;
case 8240:
olympusMakerParent = tcOlympusMakerNote8240;
break;
case 8256:
olympusMakerParent = tcOlympusMakerNote8256;
break;
case 8272:
olympusMakerParent = tcOlympusMakerNote8272;
break;
case 12288:
olympusMakerParent = tcOlympusMakerNote12288;
break;
default:
break;
}
if (olympusMakerParent)
{
stream.SetReadPosition (tagOffset);
uint64 subMakerNoteOffset = stream.Get_uint32 () + offsetDelta;
if (subMakerNoteOffset >= minOffset &&
subMakerNoteOffset < maxOffset)
{
if (ParseMakerNoteIFD (host,
stream,
maxOffset - subMakerNoteOffset,
subMakerNoteOffset,
offsetDelta,
minOffset,
maxOffset,
olympusMakerParent))
{
continue;
}
}
}
stream.SetReadPosition (tagOffset);
}
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
parentCode,
tagCode,
tagType,
tagCount,
tagOffset,
offsetDelta);
}
// Grab next IFD pointer, for possible use.
if (ifdSize >= 2 + ifdEntries * 12 + 4)
{
stream.SetReadPosition (ifdOffset + 2 + ifdEntries * 12);
fMakerNoteNextIFD = stream.Get_uint32 ();
}
#if qDNGValidate
if (gVerbose)
{
printf ("\n");
}
#endif
return true;
}
/*****************************************************************************/
void dng_info::ParseMakerNote (dng_host &host,
dng_stream &stream,
uint32 makerNoteCount,
uint64 makerNoteOffset,
int64 offsetDelta,
uint64 minOffset,
uint64 maxOffset)
{
uint8 firstBytes [16];
memset (firstBytes, 0, sizeof (firstBytes));
stream.SetReadPosition (makerNoteOffset);
stream.Get (firstBytes, (uint32) Min_uint64 (sizeof (firstBytes),
makerNoteCount));
// Epson MakerNote with header.
if (memcmp (firstBytes, "EPSON\000\001\000", 8) == 0)
{
if (makerNoteCount > 8)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 8,
makerNoteOffset + 8,
offsetDelta,
minOffset,
maxOffset,
tcEpsonMakerNote);
}
return;
}
// Fujifilm MakerNote.
if (memcmp (firstBytes, "FUJIFILM", 8) == 0)
{
stream.SetReadPosition (makerNoteOffset + 8);
TempLittleEndian tempEndian (stream);
uint32 ifd_offset = stream.Get_uint32 ();
if (ifd_offset >= 12 && ifd_offset < makerNoteCount)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount - ifd_offset,
makerNoteOffset + ifd_offset,
makerNoteOffset,
minOffset,
maxOffset,
tcFujiMakerNote);
}
return;
}
// Leica MakerNote for models that store entry offsets relative to the start of
// the MakerNote (e.g., M9).
if ((memcmp (firstBytes, "LEICA\000\000\000", 8) == 0) ||
(memcmp (firstBytes, "LEICA0\003\000", 8) == 0) ||
(memcmp (firstBytes, "LEICA\000\001\000", 8) == 0) ||
(memcmp (firstBytes, "LEICA\000\005\000", 8) == 0))
{
if (makerNoteCount > 8)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 8,
makerNoteOffset + 8,
makerNoteOffset,
minOffset,
maxOffset,
tcLeicaMakerNote);
}
return;
}
// Leica MakerNote for models that store absolute entry offsets (i.e., relative
// to the start of the file, e.g., S2).
if (memcmp (firstBytes, "LEICA\000\002\377", 8) == 0)
{
if (makerNoteCount > 8)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 8,
makerNoteOffset + 8,
offsetDelta,
minOffset,
maxOffset,
tcLeicaMakerNote);
}
return;
}
// Nikon version 2 MakerNote with header.
if (memcmp (firstBytes, "Nikon\000\002", 7) == 0)
{
stream.SetReadPosition (makerNoteOffset + 10);
bool bigEndian = false;
uint16 endianMark = stream.Get_uint16 ();
if (endianMark == byteOrderMM)
{
bigEndian = true;
}
else if (endianMark != byteOrderII)
{
return;
}
TempBigEndian temp_endian (stream, bigEndian);
uint16 magic = stream.Get_uint16 ();
if (magic != 42)
{
return;
}
uint32 ifd_offset = stream.Get_uint32 ();
if (ifd_offset >= 8 && ifd_offset < makerNoteCount - 10)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 10 - ifd_offset,
makerNoteOffset + 10 + ifd_offset,
makerNoteOffset + 10,
minOffset,
maxOffset,
tcNikonMakerNote);
}
return;
}
// Newer version of Olympus MakerNote with byte order mark.
if (memcmp (firstBytes, "OLYMPUS\000", 8) == 0)
{
stream.SetReadPosition (makerNoteOffset + 8);
bool bigEndian = false;
uint16 endianMark = stream.Get_uint16 ();
if (endianMark == byteOrderMM)
{
bigEndian = true;
}
else if (endianMark != byteOrderII)
{
return;
}
TempBigEndian temp_endian (stream, bigEndian);
uint16 version = stream.Get_uint16 ();
if (version != 3)
{
return;
}
if (makerNoteCount > 12)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 12,
makerNoteOffset + 12,
makerNoteOffset,
minOffset,
maxOffset,
tcOlympusMakerNote);
}
return;
}
// Olympus MakerNote with header.
if (memcmp (firstBytes, "OLYMP", 5) == 0)
{
if (makerNoteCount > 8)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 8,
makerNoteOffset + 8,
offsetDelta,
minOffset,
maxOffset,
tcOlympusMakerNote);
}
return;
}
// Panasonic MakerNote.
if (memcmp (firstBytes, "Panasonic\000\000\000", 12) == 0)
{
if (makerNoteCount > 12)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 12,
makerNoteOffset + 12,
offsetDelta,
minOffset,
maxOffset,
tcPanasonicMakerNote);
}
return;
}
// Pentax MakerNote.
if (memcmp (firstBytes, "AOC", 4) == 0)
{
if (makerNoteCount > 6)
{
stream.SetReadPosition (makerNoteOffset + 4);
bool bigEndian = stream.BigEndian ();
uint16 endianMark = stream.Get_uint16 ();
if (endianMark == byteOrderMM)
{
bigEndian = true;
}
else if (endianMark == byteOrderII)
{
bigEndian = false;
}
TempBigEndian temp_endian (stream, bigEndian);
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 6,
makerNoteOffset + 6,
offsetDelta,
minOffset,
maxOffset,
tcPentaxMakerNote);
}
return;
}
// Ricoh MakerNote.
if (memcmp (firstBytes, "RICOH", 5) == 0 ||
memcmp (firstBytes, "Ricoh", 5) == 0)
{
if (makerNoteCount > 8)
{
TempBigEndian tempEndian (stream);
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 8,
makerNoteOffset + 8,
offsetDelta,
minOffset,
maxOffset,
tcRicohMakerNote);
}
return;
}
// Nikon MakerNote without header.
if (fExif->fMake.StartsWith ("NIKON"))
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount,
makerNoteOffset,
offsetDelta,
minOffset,
maxOffset,
tcNikonMakerNote);
return;
}
// Canon MakerNote.
if (fExif->fMake.StartsWith ("CANON"))
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount,
makerNoteOffset,
offsetDelta,
minOffset,
maxOffset,
tcCanonMakerNote);
return;
}
// Minolta MakerNote.
if (fExif->fMake.StartsWith ("MINOLTA" ) ||
fExif->fMake.StartsWith ("KONICA MINOLTA"))
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount,
makerNoteOffset,
offsetDelta,
minOffset,
maxOffset,
tcMinoltaMakerNote);
return;
}
// Sony MakerNote.
if (fExif->fMake.StartsWith ("SONY"))
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount,
makerNoteOffset,
offsetDelta,
minOffset,
maxOffset,
tcSonyMakerNote);
return;
}
// Kodak MakerNote.
if (fExif->fMake.StartsWith ("EASTMAN KODAK"))
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount,
makerNoteOffset,
offsetDelta,
minOffset,
maxOffset,
tcKodakMakerNote);
return;
}
// Mamiya MakerNote.
if (fExif->fMake.StartsWith ("Mamiya"))
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount,
makerNoteOffset,
offsetDelta,
minOffset,
maxOffset,
tcMamiyaMakerNote);
// Mamiya uses a MakerNote chain.
while (fMakerNoteNextIFD)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount,
offsetDelta + fMakerNoteNextIFD,
offsetDelta,
minOffset,
maxOffset,
tcMamiyaMakerNote);
}
return;
}
// Nikon MakerNote without header.
if (fExif->fMake.StartsWith ("Hasselblad"))
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount,
makerNoteOffset,
offsetDelta,
minOffset,
maxOffset,
tcHasselbladMakerNote);
return;
}
// Samsung MakerNote.
if (fExif->fMake.StartsWith ("Samsung"))
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount,
makerNoteOffset,
makerNoteOffset,
minOffset,
maxOffset,
tcSamsungMakerNote);
return;
}
// Casio MakerNote.
if (fExif->fMake.StartsWith ("CASIO COMPUTER") &&
memcmp (firstBytes, "QVC\000\000\000", 6) == 0)
{
ParseMakerNoteIFD (host,
stream,
makerNoteCount - 6,
makerNoteOffset + 6,
makerNoteOffset,
minOffset,
maxOffset,
tcCasioMakerNote);
return;
}
}
/*****************************************************************************/
void dng_info::ParseSonyPrivateData (dng_host & /* host */,
dng_stream & /* stream */,
uint64 /* count */,
uint64 /* oldOffset */,
uint64 /* newOffset */)
{
// Sony private data is encrypted, sorry.
}
/*****************************************************************************/
void dng_info::ParseDNGPrivateData (dng_host &host,
dng_stream &stream)
{
if (fShared->fDNGPrivateDataCount < 2)
{
return;
}
// DNG private data should always start with a null-terminated
// company name, to define the format of the private data.
dng_string privateName;
{
char buffer [64];
stream.SetReadPosition (fShared->fDNGPrivateDataOffset);
uint32 readLength = Min_uint32 (fShared->fDNGPrivateDataCount,
sizeof (buffer) - 1);
stream.Get (buffer, readLength);
buffer [readLength] = 0;
privateName.Set (buffer);
}
// Pentax is storing their MakerNote in the DNGPrivateData data.
if (privateName.StartsWith ("PENTAX" ) ||
privateName.StartsWith ("SAMSUNG"))
{
#if qDNGValidate
if (gVerbose)
{
printf ("Parsing Pentax/Samsung DNGPrivateData\n\n");
}
#endif
stream.SetReadPosition (fShared->fDNGPrivateDataOffset + 8);
bool bigEndian = stream.BigEndian ();
uint16 endianMark = stream.Get_uint16 ();
if (endianMark == byteOrderMM)
{
bigEndian = true;
}
else if (endianMark == byteOrderII)
{
bigEndian = false;
}
TempBigEndian temp_endian (stream, bigEndian);
ParseMakerNoteIFD (host,
stream,
fShared->fDNGPrivateDataCount - 10,
fShared->fDNGPrivateDataOffset + 10,
fShared->fDNGPrivateDataOffset,
fShared->fDNGPrivateDataOffset,
fShared->fDNGPrivateDataOffset + fShared->fDNGPrivateDataCount,
tcPentaxMakerNote);
return;
}
// Stop parsing if this is not an Adobe format block.
if (!privateName.Matches ("Adobe"))
{
return;
}
TempBigEndian temp_order (stream);
uint32 section_offset = 6;
while (SafeUint32Add(section_offset, 8) < fShared->fDNGPrivateDataCount)
{
stream.SetReadPosition (SafeUint64Add(fShared->fDNGPrivateDataOffset,
section_offset));
uint32 section_key = stream.Get_uint32 ();
uint32 section_count = stream.Get_uint32 ();
if (section_key == DNG_CHAR4 ('M','a','k','N') && section_count > 6)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found MakerNote inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
int64 old_offset = stream.Get_uint32 ();
uint32 tempSize = SafeUint32Sub(section_count, 6);
AutoPtr<dng_memory_block> tempBlock (host.Allocate (tempSize));
uint64 positionInOriginalFile = stream.PositionInOriginalFile();
stream.Get (tempBlock->Buffer (), tempSize);
dng_stream tempStream (tempBlock->Buffer (),
tempSize,
positionInOriginalFile);
tempStream.SetBigEndian (order_mark == byteOrderMM);
ParseMakerNote (host,
tempStream,
tempSize,
0,
0 - old_offset,
0,
tempSize);
}
else if (section_key == DNG_CHAR4 ('S','R','2',' ') && section_count > 6)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found Sony private data inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint64 old_offset = stream.Get_uint32 ();
uint64 new_offset = fShared->fDNGPrivateDataOffset + section_offset + 14;
TempBigEndian sr2_order (stream, order_mark == byteOrderMM);
ParseSonyPrivateData (host,
stream,
section_count - 6,
old_offset,
new_offset);
}
else if (section_key == DNG_CHAR4 ('R','A','F',' ') && section_count > 4)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found Fuji RAF tags inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint32 tagCount = stream.Get_uint32 ();
uint64 tagOffset = stream.Position ();
if (tagCount)
{
TempBigEndian raf_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcFujiRAF,
tcFujiHeader,
ttUndefined,
tagCount,
tagOffset,
0);
stream.SetReadPosition (SafeUint64Add(tagOffset, tagCount));
}
tagCount = stream.Get_uint32 ();
tagOffset = stream.Position ();
if (tagCount)
{
TempBigEndian raf_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcFujiRAF,
tcFujiRawInfo1,
ttUndefined,
tagCount,
tagOffset,
0);
stream.SetReadPosition (SafeUint64Add(tagOffset, tagCount));
}
tagCount = stream.Get_uint32 ();
tagOffset = stream.Position ();
if (tagCount)
{
TempBigEndian raf_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcFujiRAF,
tcFujiRawInfo2,
ttUndefined,
tagCount,
tagOffset,
0);
stream.SetReadPosition (SafeUint64Add(tagOffset, tagCount));
}
}
else if (section_key == DNG_CHAR4 ('C','n','t','x') && section_count > 4)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found Contax Raw header inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint32 tagCount = stream.Get_uint32 ();
uint64 tagOffset = stream.Position ();
if (tagCount)
{
TempBigEndian contax_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcContaxRAW,
tcContaxHeader,
ttUndefined,
tagCount,
tagOffset,
0);
}
}
else if (section_key == DNG_CHAR4 ('C','R','W',' ') && section_count > 4)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found Canon CRW tags inside DNGPrivateData\n\n");
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint32 entries = stream.Get_uint16 ();
uint64 crwTagStart = stream.Position ();
for (uint32 parsePass = 1; parsePass <= 2; parsePass++)
{
stream.SetReadPosition (crwTagStart);
for (uint32 index = 0; index < entries; index++)
{
uint32 tagCode = stream.Get_uint16 ();
uint32 tagCount = stream.Get_uint32 ();
uint64 tagOffset = stream.Position ();
// We need to grab the model id tag first, and then all the
// other tags.
if ((parsePass == 1) == (tagCode == 0x5834))
{
TempBigEndian tag_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
tcCanonCRW,
tagCode,
ttUndefined,
tagCount,
tagOffset,
0);
}
stream.SetReadPosition (tagOffset + tagCount);
}
}
}
else if (section_count > 4)
{
uint32 parentCode = 0;
bool code32 = false;
bool hasType = true;
switch (section_key)
{
case DNG_CHAR4 ('M','R','W',' '):
{
parentCode = tcMinoltaMRW;
code32 = true;
hasType = false;
break;
}
case DNG_CHAR4 ('P','a','n','o'):
{
parentCode = tcPanasonicRAW;
break;
}
case DNG_CHAR4 ('L','e','a','f'):
{
parentCode = tcLeafMOS;
break;
}
case DNG_CHAR4 ('K','o','d','a'):
{
parentCode = tcKodakDCRPrivateIFD;
break;
}
case DNG_CHAR4 ('K','D','C',' '):
{
parentCode = tcKodakKDCPrivateIFD;
break;
}
default:
break;
}
if (parentCode)
{
#if qDNGValidate
if (gVerbose)
{
printf ("Found %s tags inside DNGPrivateData\n\n",
LookupParentCode (parentCode));
}
#endif
uint16 order_mark = stream.Get_uint16 ();
uint32 entries = stream.Get_uint16 ();
for (uint32 index = 0; index < entries; index++)
{
uint32 tagCode = code32 ? stream.Get_uint32 ()
: stream.Get_uint16 ();
uint32 tagType = hasType ? stream.Get_uint16 ()
: ttUndefined;
uint32 tagCount = stream.Get_uint32 ();
uint32 tagSize = SafeUint32Mult(tagCount, TagTypeSize (tagType));
uint64 tagOffset = stream.Position ();
TempBigEndian tag_order (stream, order_mark == byteOrderMM);
ParseTag (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
parentCode,
tagCode,
tagType,
tagCount,
tagOffset,
0);
stream.SetReadPosition (SafeUint64Add(tagOffset, tagSize));
}
}
}
section_offset = SafeUint32Add(section_offset, 8);
section_offset = SafeUint32Add(section_offset, section_count);
if (section_offset & 1)
{
section_offset = SafeUint32Add(section_offset, 1);
}
}
}
/*****************************************************************************/
void dng_info::Parse (dng_host &host,
dng_stream &stream)
{
fTIFFBlockOffset = stream.Position ();
fTIFFBlockOriginalOffset = stream.PositionInOriginalFile ();
// Check byte order indicator.
uint16 byteOrder = stream.Get_uint16 ();
if (byteOrder == byteOrderII)
{
fBigEndian = false;
#if qDNGValidate
if (gVerbose)
{
printf ("\nUses little-endian byte order\n");
}
#endif
stream.SetLittleEndian ();
}
else if (byteOrder == byteOrderMM)
{
fBigEndian = true;
#if qDNGValidate
if (gVerbose)
{
printf ("\nUses big-endian byte order\n");
}
#endif
stream.SetBigEndian ();
}
else
{
#if qDNGValidate
ReportError ("Unknown byte order");
#endif
ThrowBadFormat ();
}
// Check "magic number" indicator.
fMagic = stream.Get_uint16 ();
#if qDNGValidate
if (gVerbose)
{
printf ("Magic number = %u\n\n", (unsigned) fMagic);
}
#endif
ValidateMagic ();
// Parse IFD 0.
uint64 next_offset = stream.Get_uint32 ();
fExif.Reset (host.Make_dng_exif ());
fShared.Reset (host.Make_dng_shared ());
fIFD [0].Reset (host.Make_dng_ifd ());
ParseIFD (host,
stream,
fExif.Get (),
fShared.Get (),
fIFD [0].Get (),
fTIFFBlockOffset + next_offset,
fTIFFBlockOffset,
0);
next_offset = fIFD [0]->fNextIFD;
fIFDCount = 1;
// Parse chained IFDs.
while (next_offset)
{
if (next_offset >= stream.Length ())
{
#if qDNGValidate
{
ReportWarning ("Chained IFD offset past end of stream");
}
#endif
break;
}
// Some TIFF file writers forget about the next IFD offset, so
// validate the IFD at that offset before parsing it.
if (!ValidateIFD (stream,
fTIFFBlockOffset + next_offset,
fTIFFBlockOffset))
{
#if qDNGValidate
{
ReportWarning ("Chained IFD is not valid");
}
#endif
break;
}
if (fChainedIFDCount == kMaxChainedIFDs)
{
#if qDNGValidate
{
ReportWarning ("Chained IFD count exceeds DNG SDK parsing limit");
}
#endif
break;
}
fChainedIFD [fChainedIFDCount].Reset (host.Make_dng_ifd ());
ParseIFD (host,
stream,
NULL,
NULL,
fChainedIFD [fChainedIFDCount].Get (),
fTIFFBlockOffset + next_offset,
fTIFFBlockOffset,
tcFirstChainedIFD + fChainedIFDCount);
next_offset = fChainedIFD [fChainedIFDCount]->fNextIFD;
fChainedIFDCount++;
}
// Parse SubIFDs.
uint32 searchedIFDs = 0;
bool tooManySubIFDs = false;
while (searchedIFDs < fIFDCount && !tooManySubIFDs)
{
uint32 searchLimit = fIFDCount;
for (uint32 searchIndex = searchedIFDs;
searchIndex < searchLimit && !tooManySubIFDs;
searchIndex++)
{
for (uint32 subIndex = 0;
subIndex < fIFD [searchIndex]->fSubIFDsCount;
subIndex++)
{
if (fIFDCount == kMaxSubIFDs + 1)
{
tooManySubIFDs = true;
break;
}
stream.SetReadPosition (fIFD [searchIndex]->fSubIFDsOffset +
subIndex * 4);
uint32 sub_ifd_offset = stream.Get_uint32 ();
fIFD [fIFDCount].Reset (host.Make_dng_ifd ());
ParseIFD (host,
stream,
fExif.Get (),
fShared.Get (),
fIFD [fIFDCount].Get (),
fTIFFBlockOffset + sub_ifd_offset,
fTIFFBlockOffset,
tcFirstSubIFD + fIFDCount - 1);
fIFDCount++;
}
searchedIFDs = searchLimit;
}
}
#if qDNGValidate
{
if (tooManySubIFDs)
{
ReportWarning ("SubIFD count exceeds DNG SDK parsing limit");
}
}
#endif
// Parse EXIF IFD.
if (fShared->fExifIFD)
{
ParseIFD (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
fTIFFBlockOffset + fShared->fExifIFD,
fTIFFBlockOffset,
tcExifIFD);
}
// Parse GPS IFD.
if (fShared->fGPSInfo)
{
ParseIFD (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
fTIFFBlockOffset + fShared->fGPSInfo,
fTIFFBlockOffset,
tcGPSInfo);
}
// Parse Interoperability IFD.
if (fShared->fInteroperabilityIFD)
{
// Some Kodak KDC files have bogus Interoperability IFDs, so
// validate the IFD before trying to parse it.
if (ValidateIFD (stream,
fTIFFBlockOffset + fShared->fInteroperabilityIFD,
fTIFFBlockOffset))
{
ParseIFD (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
fTIFFBlockOffset + fShared->fInteroperabilityIFD,
fTIFFBlockOffset,
tcInteroperabilityIFD);
}
#if qDNGValidate
else
{
ReportWarning ("The Interoperability IFD is not a valid IFD");
}
#endif
}
// Parse Kodak DCR Private IFD.
if (fShared->fKodakDCRPrivateIFD)
{
ParseIFD (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
fTIFFBlockOffset + fShared->fKodakDCRPrivateIFD,
fTIFFBlockOffset,
tcKodakDCRPrivateIFD);
}
// Parse Kodak KDC Private IFD.
if (fShared->fKodakKDCPrivateIFD)
{
ParseIFD (host,
stream,
fExif.Get (),
fShared.Get (),
NULL,
fTIFFBlockOffset + fShared->fKodakKDCPrivateIFD,
fTIFFBlockOffset,
tcKodakKDCPrivateIFD);
}
// Parse MakerNote tag.
if (fShared->fMakerNoteCount)
{
ParseMakerNote (host,
stream,
(uint32) (fTIFFBlockOffset + fShared->fMakerNoteCount),
fShared->fMakerNoteOffset,
fTIFFBlockOffset,
0,
stream.Length ());
}
// Parse DNGPrivateData tag.
if (fShared->fDNGPrivateDataCount &&
fShared->fDNGVersion)
{
ParseDNGPrivateData (host, stream);
}
#if qDNGValidate
// If we are running dng_validate on stand-alone camera profile file,
// complete the validation of the profile.
if (fMagic == magicExtendedProfile)
{
dng_camera_profile_info &profileInfo = fShared->fCameraProfile;
dng_camera_profile profile;
profile.Parse (stream, profileInfo);
if (profileInfo.fColorPlanes < 3 || !profile.IsValid (profileInfo.fColorPlanes))
{
ReportError ("Invalid camera profile file");
}
}
#endif
}
/*****************************************************************************/
void dng_info::PostParse (dng_host &host)
{
uint32 index;
fExif->PostParse (host, *fShared.Get ());
fShared->PostParse (host, *fExif.Get ());
for (index = 0; index < fIFDCount; index++)
{
fIFD [index]->PostParse ();
}
for (index = 0; index < fChainedIFDCount; index++)
{
fChainedIFD [index]->PostParse ();
}
if (fShared->fDNGVersion != 0)
{
// Find main IFD.
fMainIndex = -1;
for (index = 0; index < fIFDCount; index++)
{
if (fIFD [index]->fUsesNewSubFileType &&
fIFD [index]->fNewSubFileType == sfMainImage)
{
if (fMainIndex == -1)
{
fMainIndex = index;
}
#if qDNGValidate
else
{
ReportError ("Multiple IFDs marked as main image");
}
#endif
}
else if (fIFD [index]->fNewSubFileType == sfPreviewImage ||
fIFD [index]->fNewSubFileType == sfAltPreviewImage)
{
// Fill in default color space for DNG previews if not included.
if (fIFD [index]->fPreviewInfo.fColorSpace == previewColorSpace_MaxEnum)
{
if (fIFD [index]->fSamplesPerPixel == 1)
{
fIFD [index]->fPreviewInfo.fColorSpace = previewColorSpace_GrayGamma22;
}
else
{
fIFD [index]->fPreviewInfo.fColorSpace = previewColorSpace_sRGB;
}
}
}
}
// Deal with lossless JPEG bug in early DNG versions.
if (fShared->fDNGVersion < dngVersion_1_1_0_0)
{
if (fMainIndex != -1)
{
fIFD [fMainIndex]->fLosslessJPEGBug16 = true;
}
}
// Find mask index.
for (index = 0; index < fIFDCount; index++)
{
if (fIFD [index]->fNewSubFileType == sfTransparencyMask)
{
if (fMaskIndex == -1)
{
fMaskIndex = index;
}
#if qDNGValidate
else
{
ReportError ("Multiple IFDs marked as transparency mask image");
}
#endif
}
}
// Warn about Chained IFDs.
#if qDNGValidate
if (fChainedIFDCount > 0)
{
ReportWarning ("This file has Chained IFDs, which will be ignored by DNG readers");
}
#endif
}
}
/*****************************************************************************/
bool dng_info::IsValidDNG ()
{
// Check shared info.
if (!fShared->IsValidDNG ())
{
return false;
}
// Check TIFF magic number.
if (fMagic != 42)
{
#if qDNGValidate
ReportError ("Invalid TIFF magic number");
#endif
return false;
}
// Make sure we have a main image IFD.
if (fMainIndex == -1)
{
#if qDNGValidate
ReportError ("Unable to find main image IFD");
#endif
return false;
}
// Make sure is each IFD is valid.
for (uint32 index = 0; index < fIFDCount; index++)
{
uint32 parentCode = (index == 0 ? 0 : tcFirstSubIFD + index - 1);
if (!fIFD [index]->IsValidDNG (*fShared.Get (),
parentCode))
{
// Only errors in the main and transparency mask IFDs are fatal to parsing.
if (index == (uint32) fMainIndex ||
index == (uint32) fMaskIndex)
{
return false;
}
}
}
return true;
}
/*****************************************************************************/